We've combined our 37 years of producing award-winning Fortran language systems with Fujitsu's compiler expertise and high-performance code generator to deliver the most-productive, best-supported Fortran 95 language system for the PC.

Whether you write new Fortran programs or downsize existing applications, you need speed, dependability, and great tech support. You need Lahey/Fujitsu Fortran 95!

• Prefetch optimizations for PIII and Athlon.
• Improvements in logical conditional processing.
• Microsoft Incremental Linker (link) included.
• Fortran runtime libraries as DLLs.

  Beta tester Houston Stokes, economics professor and software developer, writes about his software, "The main test problem on a Dell 600 with W2K runs 9.363 seconds with LF95 v5.6 and 8.2 seconds with v5.7. This is a 12.4% gain! Well worth the effort."

• IEEE Standard 754 support.
• Improved stack handling.
• New Winteracter Starter Kit (WiSK) graphics package.
• New features in SSL2 (Scientific Subroutine Library 2).
• External file size increased to 2**64 bytes.
• Other new features.

LF95 PRO v5.7
LF95 PRO includes the powerful Lahey/Fujitsu Fortran 95 optimizing compiler, the Fortran-smart integrated development environment, the Winteracter Starter Kit, WiSK, for creating Windows GUIs and displaying graphics, Polyhedron's Automake utility, Fujitsu's WinFDB Windows debugger, linker, librarian, f90SQL-Lite, support for creating DLLs and calling the Windows APIs, online documentation, adds , the Coverage Analysis Tool that detects unexecuted code and performs range-of-operation checking, the Sampler Tool (an execution profiler) that helps tune program performance, the Fujitsu Visual Analyzer, the Fujitsu SSL2 math library (an extensive library and a proven performer on Fujitsu mainframes and workstations), the Fujitsu C compiler, and free email support. Suggested retail price, $795.

• LF95 Performance.
• LF95 Optimizations.
• Statically Link Fujitsu C, VC++, and Borland C++ Object Files.
• DLL Interfaces to Visual Basic, VC++, Borland C++, and Delphi.
• Win32 API Access.
• Legacy Fortran Support.
• ANSI/ISO-Compliant Fortran 95. 
• Fortran-Smart Windows Development Environment.
• Winteracter Starter Kit.
• Fujitsu Visual Analyzer.
• Fujitsu Scientific Subroutine Library 2.
• Fujitsu C Language System.
• Free Email Support

Improvements in logical conditional processing.
The processing of complex logical expressions is improved with optimization level 1 (-o1). For example, the Polyhedron benchmark program PNPOLY.FOR contains the following logical IF block (PNPOLY is a logical function):

      IF ( (((Yp(i).LE.Y) .AND. (Y.LT.Yp(j))) .OR.
     &((Yp(j).LE.Y) .AND. (Y.LT.Yp(i)))) ) THEN
          IF ( X.LT.((Xp(j)-Xp(i))*
     &    ( (Y-Yp(i))/ (Yp(j)-Yp(i)) )+Xp(i)) )
     &    PNPOLY = .NOT.PNPOLY
      ENDIF

• Automatically converts Object Module Format (OMF) object files to Common Object File Format (COFF) enabling OMF and COFF objects to be linked together into the same executable.
• Automatically generates Microsoft-compatible import libraries whenever a DLL is created. The ability to use Microsoft import libraries streamlines the process of linking mixed-language DLLs.
• Allows faster linking of large programs. Link doesn’t completely regenerate an executable file, it only replaces objects in the .exe that have changed since the last link.

Allows you to insert comments into executable files. This facilitates versioning and fingerprinting.

IEEE Standard 754 support.
IEEE Standard 754 defines the representation and behavior of 32- and 64-bit floating point numbers. IEEE 754 support provides for consistency of basic computational results among platforms that use IEEE 754. An excellent overview of the standard is presented online by Steve Hollasch at http://research.microsoft.com/~hollasch/cgindex/coding/ieeefloat.html. A heavy-duty online discussion of floating point numbers and the standard is provided by David Goldberg at http://docs.sun.com/source/806-3568/index.html.

Stack option changes.
The default stack size is now 1MB (compared to 100K in v5.6). A new stack option accepts both reserve and commit arguments: -stack n[:m] (where n=reserve, m=commit). The maximum amount of stack is not automatically committed at the time the program is loaded. This can lead to faster load times for LF95 executables. Additional stack is allocated as needed with increases controlled by the commit argument. Even after a program is linked, the maximum amount of stack (specified by the reserve argument) and how much the stack is increased when more is required (specified by the commit argument) can be modified using the included "editbin" utility.

New Winteracter Starter Kit (WiSK).
The new WiSK is based on Winteracter v4.10. Following are some of the new features:

• A new Resource Editor combines and improves the old menu and dialog editors and adds an image editor for icon, cursor, and bitmap-button creation. This substantially streamlines resource file maintenance.
• The included Winteracter Application Wizard provides a quick and easy method of generating a reasonably substantial starter application tailored to your needs. 
• A major new graphics text subroutine group supersedes the old TX/FS/CL/GC groups. New features include access to any Windows font, rotated text, vertical text, elimination of character set files, and native proportional spacing. 
• Numerous other enhancements: Graphics can now be redirected to a dialog field instead of to a window. Windows and dialogs can now be combined. Menus can now be added to child windows in addition to the root window. Status bar help prompts can be attached to menu items. Support for progress bars is added. Routines to change the state of a field and move the cursor to a specific field are added. Mouse cursor is selectable and mouse double clicks are reported.

• The inverse of a positive-definite symmetric matrix decomposed into the factors L, D and L(T)
• System of linear equations with an unsymmetric or indefinite sparse real matrix (BICGSTAB(L) method)
• Multiplication of a real band matrix and a real vector

• Eigenvalues and eigenvectors of Hermite matrices
• Eigenvalues and eigenvectors of real symmetric matrices

• Singlevariate, multiple, and multivariate discrete real Fourier transform (mixed radix)
• Singlevariate, multiple, and multivariate discrete complex Fourier transform (mixed radix, complex array) 

• Generation of normal random numbers (Wallace’s method)

Other new features.

• The following Microsoft tools are included:

Library manager, lib (Lahey’s LM is still included)
Make utility, nmake (Polyhedron’s Automake is still included)
Binary-file dumper, dumpbin
Binary-file editor, editbin
• Microsoft’s C-runtime library (replaces Borland’s). 
• Removed runtime limitation on number of open files. 
• New -wide option for fixed-format source extending to column 256. 
• Column position of offending code identified in compilation messages where possible. 
• More mixed-language programming examples. 
• Improved Language Reference, User’s Guide, and WiSK Reference.

LF95 Performance.
LF95 5.7 offers improved execution performance on most Fortran 77 and 90 codes. The new prefetch optimizations help performance on PIII and Athlon chips. "We tested v5.7’s prefetch optimization on a 1.4GHz Athlon, with 256MB DDE 133 SDRAM, running Windows 2000 Pro SP2 using Polyhedron’s (www.polyhedron.com) Fortran 77 and 90 benchmarks. Using the "-prefetch 1" switch, the 77 benchmarks ran an average of 12.9% faster than they did when built with LF95 v5.6. The 90 benchmarks ran an average 2.8% faster. See Fortran SOURCE, Volume 17, Issue 2, "What is Prefetch?" for a description of the prefetch optimization." 

LF95 Optimizations.
Basic Optimization

• Constant folding
• Common subexpression elimination
• Copy propagation
• Strength Reduction
• Algebraic simplifications
• Dead code elimination
• Peephole optimization
• Loop invariant code motion
• Transform array element to simple variable
• Local Instruction scheduling
• Address calculation optimization

• Loop unrolling
• Loop interchange

• Inlining mathematical functions
• Stack optimization

• I486/Pentium/Pentium PRO instruction selection
• Using fast input/output libraries
• Prefetch Pentium III / Athlon

DLL Interfaces to Visual Basic, VC++, Borland C++, Delphi, Microsoft .NET languages.
Create 32-bit Windows DLLs from your Fortran routines and call the Fortran routines from 32-bit Windows programs created with Microsoft Visual Basic, Microsoft Visual C++, Borland C++, Borland Delphi, and Microsoft .NET languages. 

Win32 API Access.
LF95 supports direct calls from Fortran to functions in the Win32 API. For a narrow range of applications, this might be the last little bit of glue you need to pull off your project. Note that this is not for the faint-hearted! You'll need to be a Windows programmer to get all but the most basic functionality. That's because the API was written to be called from C. And consequently, arguments need to be passed as C expects them. Structures and callback routines pose additional problems. Clearly, this would be a difficult way to build a Windows application from scratch.

Legacy Fortran Support.
LF95 extends its language support in other directions adding many legacy Fortran features, including VAX structures and the various UNIX service routines. These features further facilitate your move to cost/performance efficiency on the PC platform:

• Unlimited number of continuation lines in free or fixed source form 
• DO UNTIL statement 
• FIND statement 
• STRUCTURE and END STRUCTURE statements 
• UNION and END UNION statements 
• MAP and END MAP statements 
• RECORD statement 
• Non-standard POINTER statement 
• AUTOMATIC statement 
• STATIC statement 
• VALUE statement 
• BYTE statement 
• Hollerith constants 
• Alternative forms of binary, octal, and hexadecimal constants 
• Binary, octal, or hexadecimal constants in a DATA, declaration statement 
• Period structure component separator 
• IMPLICIT UNDEFINED statement 
• Namelist input/output on internal file 
• FORM = 'BINARY' 
• TOTALREC specifier 
• STATUS = 'SHR' 
• Gw, $, \, and R edit descriptors 
• LOC intrinsic function 
• The following service subroutines: ABORT, BEEP, BIC, BIS, CLOCK, CLOCKM, DATE, EXIT, ERRSAV, ERRSTR, ERRSET, ERRTRA, FDATE, FREE,GETARG, GETDAT, GETLOG, GETPARM, GETTIM, GMTIME, IBTOD, IDATE, IETOM, ITIME, IVALUE, LTIME, MTOIE, PERROR, PRNSET, QSORT, SETRCD, SETBIT, SIGNAL, SLEEP 
• The following service functions: ACCESS, ALARM, BIT, CHDIR, CHMOD, CTIME, DRAND, DTIME, ETIME, FGETC, FPUTC, FSEEK, FSTAT, FTELL, GETC, GETCWD, GETFD, GETPID, HOSTNM, IARGC, IERRNO, INMAX, IOINIT, IRAND, JDATE, KILL, LNBLNK, LONG, LSTAT, MALLOC, NARGS, PUTC, RAN, RAND, RENAME, RINDEX, RTC, SECOND, SECNDS, SETDAT, SETTIM, SHORT, STAT, TIME, TIMEF, UNLINK 

Fortran-Smart Windows Development Environment.

Fortran-Smart Windows Editor
Lahey ED for Windows leads the way in intelligent, language-sensitive editing. Up and running straight out of the box for the new user but still highly configurable, ED fits the way you want to work. 
Locate problems - Lahey ED automatically highlights syntax and semantic errors generated by the compiler and positions the cursor on the offending line in your source code. 
Reduce Errors - Color syntax highlighting makes errors obvious and dramatically reduces compile-edit cycles. 
Save Time - Drag & drop text using the mouse. Right click to look up functions in other source files, open include files, and do bracket matching. 
Boost Productivity - Lahey ED formats and writes code for you with smart indenting, code templates, auto-correction, code completion, and automatic case conversion. You'll produce legible, correct code faster than ever before. 

Fortran-Smart Windows Debugger
The WinFDB debugger provides a Windows graphical interface for debugging your Fortran code. 
Incrementally execute your program - Single step through your program. Step into or over calls to other routines. 
Stop on Break Points - Click in the margin of your source code to set break points. 
Examine Registers - Open the registers window to examine processor registers and flags. 
Visual Step - Visual Step mode allows the user to automatically step through the program at a comprehensible pace. 
Watch Variables - Open a watch window to show selected variable values in any active program unit.
Mixed-Language Programs - Debug programs created from LF95 and Fujitsu C objects.

Other Development Tools
Complementing the Windows Development Environment, LF95 includes the Microsoft's make utility (nmake), Automake make utility; Microsoft's library manager (lib) and Lahey's Library Manager (LM) for building and working with library files; and Microsoft's linker (link). 

Winteracter Starter Kit.
Use the Winteracter Starter Kit - WiSK - for creating true Windows programs with Fortran. WiSK is a subset of the Winteracter Library created by Interactive Software Services, Ltd. (Winteracter is available from Lahey.) Winteracter is a Fortran 95-callable, 32-bit, Windows, user-interface and graphics development kit. Derived from Winteracter, WiSK provides a library of subroutines for window management, input handling, dialog management, and high resolution graphics, plus custom versions of the visual menu and dialog designers. 





Click here to view/download WiSK examples.